Populate text field dynamically with another field

• creativemonarchy

• September 5, 2018 at 9:57 pm

Hi.

On post save, I want to dynamically populate a text field using an image field.

So after I add an image to the image field [logo] and hit save/publish, I would like the image url to populate a text field [logo_url].

This is due to a client using a plugin that only works with meta keys and the meta key for the image is the ID, so I need to auto-populate a text field with the url.

• creativemonarchy

• September 5, 2018 at 10:05 pm

Got it!

function my_acf_save_post( $post_id ) {
    
    // get new value
    $value = get_field('logo');
    
    // do something
    update_field('logo_url', $value);
}

add_action('acf/save_post', 'my_acf_save_post', 20);